Bobbin and spool



(No Model.)

J. L. CHENEY;

, BOBBIN AND SPOOL. No. 316,944. Patented May 5; 1885.

UNITED STAT S ATENT GFFICE.

JOHN L. CHENEY, OF LOWELL, MASSACHUSETTS.

BOBBIN AND SPOOL.

SPECIFICATION forming part of Letters Patent No. 316,944,6lated May 5, 1885.

Application filed June 2, 18841 (No model.)

To all whom it may concern:

Be it known that I, JOHN L. CHENEY, a citizen of the United States, residing at Lowell, in the county of Middlesex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Bobbins and Spools, of which the following is a specification.

My invention relates to bobbins and spools having wooden heads and it consists in. an improved construction of said wooden heads adapted to prevent breaking and splitting of the same.

In the accompanying drawings, Figure 1 is an isometric view'of'such a bobbin, the upper part thereof being in central section to show the construction of the head; Fig. 2, a plan of the outer face of the inner piece of one of the heads, showing annular tongues on said piece; Fig. 3, a plan of the inner face of the outer piece of the same head, showing annular grooves on said outer piece. Figs. 4 and 5, respectively, are plans similar to Figs. 2 and 3, respectively, except that the grooves and tongues are represented as straightinstead of annular.

A is the barrel of a spool, and is of the usual construction. The heads A A are circular, and may be attached to the barrel in any usual manner; but the upper head, A, in Fig. l, is herein represented as attached by means shown and described in United States Letters Patent No. 290,534, granted December 18, 1883, to me. The mode of attachment of the heads, however, forms no part of my present invention.

It is common to construct the heads of two thin boards'or pieces of wood, which are glued together fiatwise with the grain of one piece at right'angles to that of the other. This is to prevent splitting of thewood, and makes a stronger head than one formed of a single piece of wood. It is found, however, that the parts of such heads, even when put together with the best glue, frequently come apart and then split, rendering the spools worthless; the first step in the destruction of the heads being the separation of the two layers of wood which form the head, which separation occurs either by the warping of the layers or by the shrinking or swelling of the wood, the grain of the wood in the one layer being at right angles to that in the other. To hold the layers a a of wood more firmly together, I provide one, a, of them with tongues or ridges B, preferably annular, projecting from the face thereof, and the otherlayer, a, with corresponding grooves, B, to receive and fit said tongues. Theselayers of wood are usually of about equal thickness where their thickness is greatest; but the outer layer is beveled off, as shown at a in Fig. 1, so that it will generally be desirable to form the tongues on the inner piece, a, and the grooves in the outer, a, in order that the outer piece may not have too thin an edge when the head is finally turned and beveled. The layers of the heads so made, if put together with good glue or similar adhesive substance, cannot be separated without breaking the tongues from the layer on which they are formed.

Longitudinal tongues a and grooves a may be used, as shown in Figs. 4 and 5; but the annular grooves and tongues are preferred.

The tongues and grooves make the surface of contact between the layers of the heads greater, and also allow the glue to enter the pores of the wood at the sides of the tongues and grooves.

I claim as my invention-- 1. A spool or bobbin havinga head formed of two layers of wood united by an adhesive substance, substantially as described, one of said layers being provided with a tongue and the other with a groove, said tongue being adapted to enter and fit said groove, and the grain of one of said layers being arranged at an angle to the grain of the other of said layers, as and for the purpose specified.

2. A spool or bobbin havinga head formed of two layers of wood united by an adhesive substance, substantially as described, one of said layers being provided with an annular tongue and the other with an annular groove, said tongue being adapted to enter and fit said groove, and the grain of one of said layers being arranged at an angle to the grain of the other of said layers, as and for the purpose specified.

JOHN L. CHENEY.

\Vitnesses:

ALBERT M. MOORE, E1). W. THOMPSON. 

